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发明名称
Connecting film ends
摘要
申请公布号
US2297270(A)
申请公布日期
1942.09.29
申请号
US19390268646
申请日期
1939.04.18
申请人
HUGO WESTERKAMP
发明人
WESTERKAMP HUGO
分类号
G03D15/04
主分类号
G03D15/04
代理机构
代理人
主权项
地址
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